Commit 80871482 authored by Linus Torvalds's avatar Linus Torvalds

x86: make ZERO_PAGE() at least parse its argument

This doesn't really do anything, but at least we now parse teh
ZERO_PAGE() address argument so that we'll catch the most obvious errors
in usage next time they'll happen.

See commit 6a5c5d26 ("rdma: fix build errors on s390 and MIPS due to
bad ZERO_PAGE use") what happens when we don't have any use of the macro
argument at all.
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 6a5c5d26
......@@ -46,7 +46,7 @@ void ptdump_walk_user_pgd_level_checkwx(void);
*/
extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)]
__visible;
#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
#define ZERO_PAGE(vaddr) ((void)(vaddr),virt_to_page(empty_zero_page))
extern spinlock_t pgd_lock;
extern struct list_head pgd_list;
......
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